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Contenido de metales pesados en Crassostrea angulata, Dicentrarchus labrax y Mugil auratus de los estuarios de los ríos Guadalquivir y Barbate

1987; Volume: 3; Issue: 1 Linguagem: Inglês

10.23818/limn.03.20

2660-8537

Rosario Cordón,

Water Quality and Pollution Assessment

Heavy metal contents (Fe, Cu, Mn and Zn) of oyster (Cras.tostrruangulala).european sea bass (Dicentrarcku.~labras) and grey mullet (MugiI aurat14s) from Guadalquivir and Barbate estuanes were compared.Every comparison was made between species of the same range of weight.Edible tissue of oysters from the Guadalquivir estuary had average concentrations of Cu and Zn 5.5 and 2.2 times higher respectively than those from Barbate.Copper concentrations of oysters from Guadalquivir estuary were always higher than the recommended permissible concentration for human consumption (1.000pg Cuíg d.w.).Livers ofeuropean sea bass from Guadalquivir estuary had mean Cu concentration 3.0 times higher than those from Barbate.Mean concentrations of Fe, Cu and Zn of grey mullet livers also were 1.7, 22.7 and 1.6 times higher respectively in specimens from Guadalquivir river.Concentrations for al1 metals is the two fish species studied were higher in livers than in dorsal muscle tissues.Copper accumulation in liver ofboth sea bass and grey mullet were higher in specimens from Guadalquivir estuary.